Add cran comments.

.Rbuildignore

@@ -5,3 +5,4 @@
 ^docs$
 ^_pkgdown\.yml$
 ^examples$
+^cran-comments.md$

cran-comments.md

@@ -0,0 +1,39 @@
+## Test environments
+* local Ubuntu 18.10, R 3.5.1
+* Rhub Ubuntu Linux 16.04 LTS, R-release, GCC
+* win-builder
+
+## R CMD check results
+
+```
+Status: OK
+```
+
+## check_rhub() result
+
+```
+* checking CRAN incoming feasibility ... NOTE
+Maintainer: ‘Krystian Igras <[email protected]>’
+
+New submission
+
+Possibly mis-spelled words in DESCRIPTION:
+  interpretable (9:41)
+  Interpretable (3:15)
+
+* checking examples ... NOTE
+Examples with CPU or elapsed time > 5s
+user system elapsed
+xspline 5.92  0.164   6.217
+
+0 errors | 0 warnings | 2 notes
+```
+
+# win-builder result
+
+```
+* checking CRAN incoming feasibility ... NOTE
+Maintainer: 'Krystian Igras <[email protected]>'
+
+Status: 1 NOTE
+```